Acid-resistant, hydraulically setting masses

Abstract

The invention relates to acid-resistant, hydraulically setting masses based on a) slag sand, b) one or more pozzolanas, c) one or more fillers, d) one or more polymers based on ethylenically unsaturated monomers, and water.

The invention claimed is: 
     
       1. An acid-resistant, hydraulically setting composition consisting of
 a) 20 to 25% b.w. of slag sand, 
 b) 0.5 to 30% b.w. of one or more pozzolanas, 
 c) 40 to 80% b.w. of one or more fillers, 
 d) 0.5 to 10% b.w. of one or more polymers of one or more ethylenically unsaturated monomers, 
 in each case based on the total dry weight of the composition, and 
 e) water. 
 
     
     
       2. The composition as claimed in  claim 1 , wherein one or more polymers from the group consisting of copolymers of vinyl acetate with ethylene, copolymers of vinyl acetate with ethylene and one or more further vinyl esters, copolymers of vinyl acetate with ethylene and (meth)acrylic esters, copolymers of vinyl acetate with ethylene and vinyl chloride, vinyl chloride-ethylene copolymers, (meth)acrylic ester polymers, styrene-acrylic ester copolymers and styrene-1,3-butadiene copolymers are present as polymers d). 
     
     
       3. The composition as claimed in  claim 1 , wherein the polymers d) are present in the form of aqueous dispersions thereof or as water-redispersible polymer powder. 
     
     
       4. An acid-resistant, hydraulically setting composition consisting of a) 20 to 25% b.w. of slag sand, b) 0.5 to 30% b.w. of one or more pozzolanas, c) 40 to 80% b.w. of one or more fillers, d) 0.5 to 10% b.w. of one or more polymers of one or more ethylenically unsaturated monomers, e) less than 20% by weight of standard cement, in each case based on the total dry weight of the composition, and water. 
     
     
       5. A building works coating, a jointing mortar, a repair mortar or an adhesive comprising the composition as claimed in  claim 1 .